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  • Volcanic structures often form significant part of sedimentary basins. They represent a serious obstacle to seismic and magnetic surveys, but may become a focus in rift basin description. We encountered a different case – an assumed volcanic structure in the forefield of an open-pit brown coal mine. To confirm the presence of such a hidden volcanic body we performed a gravity survey in very challenging topographic and noise conditions at the edge of the mine. Final complete Bouguer anomalies were treated by various filtering techniques including residual separation, horizontal gradients, vertical derivatives, etc. We extracted a positive residual gravity anomaly and delineated its extent from the gradient data. As well, we studied rock samples densities and porosity. It was found that the assumed volcanic rock (trachyandesite) and partly the related breccias exhibit significantly higher density than the surrounding and overlaying Tertiary sediments of the Most Basin.
  • Volcanic structures often form significant part of sedimentary basins. They represent a serious obstacle to seismic and magnetic surveys, but may become a focus in rift basin description. We encountered a different case – an assumed volcanic structure in the forefield of an open-pit brown coal mine. To confirm the presence of such a hidden volcanic body we performed a gravity survey in very challenging topographic and noise conditions at the edge of the mine. Final complete Bouguer anomalies were treated by various filtering techniques including residual separation, horizontal gradients, vertical derivatives, etc. We extracted a positive residual gravity anomaly and delineated its extent from the gradient data. As well, we studied rock samples densities and porosity. It was found that the assumed volcanic rock (trachyandesite) and partly the related breccias exhibit significantly higher density than the surrounding and overlaying Tertiary sediments of the Most Basin. (en)
Title
  • Identification of a Hidden Volcano in an Open-pit Coal Mine by Gravity Survey, NW Bohemia
  • Identification of a Hidden Volcano in an Open-pit Coal Mine by Gravity Survey, NW Bohemia (en)
skos:prefLabel
  • Identification of a Hidden Volcano in an Open-pit Coal Mine by Gravity Survey, NW Bohemia
  • Identification of a Hidden Volcano in an Open-pit Coal Mine by Gravity Survey, NW Bohemia (en)
skos:notation
  • RIV/67985530:_____/14:00440209!RIV15-AV0-67985530
http://linked.open...avai/riv/aktivita
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  • I
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 20265
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  • RIV/67985530:_____/14:00440209
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  • hidden volcano; coal mine; gravity survey (en)
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http://linked.open...ontrolniKodProRIV
  • [5F2FAE8C69BD]
http://linked.open...v/mistoKonaniAkce
  • Athens
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  • Houten
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  • Proceedings of the 20th European Meeting of Environmental and Engineering Geophysics - Near Surface Geoscience
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Mrlina, Jan
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
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  • EAGE
https://schema.org/isbn
  • 978-94-6282-027-2
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